Gunsight, K-13 Compensating Sight TBM Avenger According to Designation-Systems

According to Designation-Systems

Here is a combination counter-pointer Altimeter

SMAMA managed the logistics support for the F-111A variable sweep-wing fighter

Used in post-WWII 4 engine aircraft such as B-50

Gunsight, K-13 Compensating Sight TBM Avenger According to Designation-SystemsThe K 13 Compensating Gunsight, made by Sperry, is a electrically powered gunsight designed to compensate for altitude and airspeed. Typically mounted on the rear housing of a 50 cal machine gun from a side waist gun position in the aircraft. Used in Boeing B 17 Flying Fortress and Consolidated B 24 Liberator bombers during WW2. It was a late war innovation that used the aircraft altitude and speed with the direct correlation of where the weapon was